surface: Remove abs_x/abs_y

We no longer have child windows, so the offset is
always 0.

gdk/gdkdevice.c

@@ -1541,7 +1541,7 @@ _gdk_device_translate_screen_coord (GdkDevice *device,
       else
         scale = 1;
 
-      offset = - surface_root_x - surface->abs_x;
+      offset = - surface_root_x;
     }
   else
     {
@@ -1550,7 +1550,7 @@ _gdk_device_translate_screen_coord (GdkDevice *device,
       else
         scale = 1;
 
-      offset = - surface_root_y - surface->abs_y;
+      offset = - surface_root_y;
     }
 
   if (axis_value)

gdk/gdkinternals.h

@@ -188,7 +188,6 @@ struct _GdkSurface
 
   guint update_and_descendants_freeze_count;
 
-  gint abs_x, abs_y; /* Absolute offset in impl */
   gint width, height;
   gint shadow_top;
   gint shadow_left;

gdk/gdksurface.c

@@ -61,9 +61,7 @@
  *
  * A #GdkSurface is a (usually) rectangular region on the screen.
  * It’s a low-level object, used to implement high-level objects such as
- * #GtkWidget and #GtkWindow on the GTK level. A #GtkWindow is a toplevel
+ * #GtkWindow on the GTK level.
- * surface, the thing a user might think of as a “window” with a titlebar
- * and so on; a #GtkWindow may contain many sub-GdkSurfaces.
  */
 
 /**
@@ -73,28 +71,6 @@
  * should not be accessed directly.
  */
 
-/* Historically a GdkSurface always matches a platform native window,
- * be it a toplevel window or a child window. In this setup the
- * GdkSurface (and other GdkDrawables) were platform independent classes,
- * and the actual platform specific implementation was in a delegate
- * object available as “impl” in the surface object.
- *
- * With the addition of client side windows this changes a bit. The
- * application-visible GdkSurface object behaves as it did before, but
- * such surfaces now don't a corresponding native window. Instead subwindows
- * surfaces are “client side”, i.e. emulated by the gdk code such
- * that clipping, drawing, moving, events etc work as expected.
- *
- * GdkSurfaces have a pointer to the “impl surface” they are in, i.e.
- * the topmost GdkSurface which have the same “impl” value. This is stored
- * in impl_surface, which is different from the surface itself only for client
- * side surfaces.
- * All GdkSurfaces (native or not) track the position of the surface in the parent
- * (x, y), the size of the surface (width, height), the position of the surface
- * with respect to the impl surface (abs_x, abs_y). We also track the clip
- * region of the surface wrt parent surfaces, in surface-relative coordinates (clip_region).
- */
-
 enum {
   MOVED_TO_RECT,
   SIZE_CHANGED,
@@ -1555,6 +1531,7 @@ gdk_surface_get_device_position (GdkSurface       *surface,
                                                                 device,
                                                                 &tmp_x, &tmp_y,
                                                                 &tmp_mask);
+
   if (x)
     *x = tmp_x;
   if (y)
@@ -1597,7 +1574,7 @@ static void
 gdk_surface_show_internal (GdkSurface *surface, gboolean raise)
 {
   GdkSurfaceImplClass *impl_class;
-  gboolean was_mapped, was_viewable;
+  gboolean was_mapped;
   gboolean did_show;
 
   g_return_if_fail (GDK_IS_SURFACE (surface));
@@ -1606,7 +1583,6 @@ gdk_surface_show_internal (GdkSurface *surface, gboolean raise)
     return;
 
   was_mapped = GDK_SURFACE_IS_MAPPED (surface);
-  was_viewable = surface->viewable;
 
   if (raise)
     gdk_surface_raise_internal (surface);
@@ -1780,7 +1756,7 @@ void
 gdk_surface_hide (GdkSurface *surface)
 {
   GdkSurfaceImplClass *impl_class;
-  gboolean was_mapped, did_hide;
+  gboolean was_mapped;
 
   g_return_if_fail (GDK_IS_SURFACE (surface));
 
@@ -1825,8 +1801,6 @@ G_GNUC_END_IGNORE_DEPRECATIONS
       g_list_free (devices);
     }
 
-  did_hide = _gdk_surface_update_viewable (surface);
-
   impl_class = GDK_SURFACE_IMPL_GET_CLASS (surface->impl);
   impl_class->hide (surface);
 }
@@ -2299,9 +2273,7 @@ gdk_surface_get_root_coords (GdkSurface *surface,
   
   impl_class = GDK_SURFACE_IMPL_GET_CLASS (surface->impl);
   impl_class->get_root_coords (surface->impl_surface,
-                               x + surface->abs_x,
+                               x, y, root_x, root_y);
-                               y + surface->abs_y,
-                               root_x, root_y);
 }
 
 /**
@@ -2772,9 +2744,6 @@ gdk_surface_print (GdkSurface *surface,
   if (!gdk_surface_is_visible ((GdkSurface *)surface))
     g_print (" hidden");
 
-  g_print (" abs[%d,%d]",
-           surface->abs_x, surface->abs_y);
-
   if (surface->alpha != 255)
     g_print (" alpha[%d]",
            surface->alpha);